Cross thread

When your gal is menstrating and you tie a tampon on your dong and screw her.

My girl was on the rag but she was lookin so hot so I didn’t care, I cross threaded her

Crossthread

When two dudes duck tape their cocks together and bang a chick

Tiffani is such a ho, me and my homie, C-Dub, crossthreaded that bitch